Gastrointestinal bleeding can occur in the upper or lower gastrointestinal tract, including your oesophagus, stomach, intestines or rectum.1 Gastrointestinal bleeding can be a symptom of a number of conditions.
Gastrointestinal bleeding is typically classified into the below sub-types:
- Overt – the presence of blood in vomit, stool or from anus 2
- Occult – bleeding is not visible and may be identified through presentation of unexplained anaemia (low iron), causing tiredness and breathlessness or positive faecal occult blood test, which tests for the presence of haemoglobin in stool 2
- Obscure – persistent bleeding in which a source is not identified during colonoscopy or upper endoscopy 2